Website with Login, OTP, Admin Panel

I need a website like webmanagementt.io.

Features:

Login with Email + OTP

User can add bKash/Nagad/Rocket number (max 2)

Admin can control everything

Payment system will be crypto based

Mobile friendly admin panel

Please tell me cost and time.

I want to create a website named webmanagementt.io with the following features:

1. Login System:

   • Users must log in using Email + Password

   • OTP will be sent to Gmail, only correct OTP allows login

2. User Dashboard:

   • Users can add bKash, Nagad, or Rocket numbers

   • Maximum 2 numbers per user

3. Payment System:

   • Admin decides which payment options are available

   • Users cannot add their own payment methods

   • Crypto based payments (e.g., USDT, TRX)

4. Admin Panel:

   • View all users and their added numbers

   • Control payment options (on/off)

   • Block or delete users

   • Update website text and content

5. Mobile Friendly:

   • Admin panel and user dashboard should be fully mobile responsive

Please provide:

• Estimated cost

• Time required

• Suggested technologies for implementation